REMINDER - High Energy Physics Seminar this week (Chakraborty and Kundu)

[HECAP - Margherita Di Giovannantonio]

*_HIGH ENERGY PHYSICS SEMINARS_*
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*Tuesday, 06* May 2025, at *16:00* - *_L. Stasi seminar room_ **- 
https://indico.ictp.it/event/10961/*
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Sumanta Chakraborty (IACS, Kolkata)

*“A Story of Love and Heat**"*
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_Abstract_
In this talk, I will discuss recent advancements in the tidal Love 
numbers and tidal heating of BHs and exotic compact objects. In 
particular, I will show that contrary to popular belief, tidal Love 
numbers of rotating BHs are non-zero and for exotic compact objects the 
Love numbers have a Logarithmic dependence on compactness. I will also 
demonstrate how tidal heating can be used to test the quantum nature of 
gravity at the horizon scale.


To join via Zoom:
https://zoom.us/j/97112702802

Meeting ID:  971 1270 2802

Passcode: 645995


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*Thursday, 08* May 2025, at *14:00* - *_L. Stasi seminar room_ **- 
https://indico.ictp.it/event/10958/*
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/_!!! Please note unusual time!!!_/


Arnab Kundu (Saha Institute of Nuclear Physics)

*“Black(ish) Holes**"*
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_Abstract_
In this talk, we will review some recent results and progress in 
realizing quantum features of a black hole, using a simplified toy model 
which is based on postulating an ad hoc Dirichlet brickwall (or a 
stretched horizon) outside the black hole event horizon. In particular, 
we will discuss how this toy model yields interesting and perhaps 
surprising results that mimic certain features of quantum chaos, 
associated with a Dip-Ramp-Plateau structure for a probe scalar sector 
propagating in the background. We will further demonstrate that the 
corresponding normal mode spectrum of the scalar sector displays a rich 
thermal physics, upon taking the Dirichlet brickwall arbitrarily close 
to the event horizon. In this limit, the black hole quasi-normal modes 
also emerge within the analytic structure of the two-point function.


To join via Zoom:
https://zoom.us/j/93176935509

Meeting ID: 931 7693 5509

Passcode: 637 012